pax and resource forks

[sherlock at rna.nl (Gerben Wierda)]

I just noticed that when I use /bin/pax to create an archive, the 
resource forks are not copied. I thought Installer.app used pax for just 
this reason, but i seem to be misinformed.

Question: what does Installer.app use? Because it obviously is capable 
of creating resource forks, both on HFS+ as on UFS file systems.

If the stuff from Installer.app is built-in and unreachable for me, what 
should I use that works decently when unpacking files with resource 
forks both on HFS+ as on UFS? I assume that creating the archive with 
files with resource forks will happen from a HFS file system, it is just 
unpacking that I care about.

G